has started是什么时态

　　而现在完成可以理解成用过去的动作说明现在的状态。一定要记住，现在完成时是现在的时态! i have seen the film.看过片子，表示现在内容。

　　总体说,高中时期,过去完成时用法很局限。一定要先有第一个过去的时间,在他之前的动作才用过去完成.当然虚拟语气里会借用had done的形式。但是与过去完成时态没有关系。

　　例句：

　　Export growth has started to flatten out.

　　出口增长已逐渐缓了下来。

　　You will not be admitted to the theatre after the performance has started.

　　演出开始后不许进入剧场。

　　The government has started building fortifications along its eastern border.

　　政府已经开展了沿东部边境建造防御工事的工程。

　　She is now divorced and, in her usual resourceful way, has started her own business.

　　她现在离婚了，并以她一贯机敏能干的作风开始自己创业。